1 /* jigglypuff - a most, most, unfortunate screensaver.
3 * Copyright (c) 2003 Keith Macleod (kmacleod@primus.ca)
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation. No representations are made about the suitability of this
10 * software for any purpose. It is provided "as is" without express or
13 * Draws all varieties of obscene, spastic, puffy balls
14 * orbiting lazily about the screen. More of an accident
17 * Apologies to anyone who thought they were getting a Pokemon
20 * Of course, if you modify it to do something interesting and/or
21 * funny, I'd appreciate receiving a copy.
23 * 04/06/2003 - Oops, figured out what was wrong with the sphere
24 * mapping. I had assumed it was done in model space,
25 * but of course I was totally wrong... Eye space you
28 * 03/31/2003 - Added chrome to the color options. The mapping
29 * is anything but 'correct', but it's a pretty good
30 * effect anyways, as long as the surface is jiggling
31 * enough that you can't tell. Sure, it seems kind of odd
32 * that it's reflecting a sky that's obviously not there,
33 * but who has time to worry about silly details like
34 * that? Not me, ah rekkin'. km
39 # define DEFAULTS "*delay: 20000\n" \
41 "*wireframe: False\n" \
43 # define refresh_jigglypuff 0
44 # define release_jigglypuff 0
45 # include "xlockmore.h"
54 #include "xpm-ximage.h"
55 #include "gltrackball.h"
56 #include "../images/jigglymap.xpm"
61 #define DEF_COLOR "cycle"
62 #define DEF_SHININESS "100"
63 #define DEF_COMPLEXITY "2"
64 #define DEF_SPEED "500"
65 #define DEF_DISTANCE "100"
66 #define DEF_HOLD "800"
67 #define DEF_SPHERISM "75"
68 #define DEF_DAMPING "500"
71 #define max(a,b) (((a)>(b))?(a):(b))
72 #define min(a,b) (((a)<(b))?(a):(b))
75 /* Why isn't RAND_MAX correct in the first place? */
76 #define REAL_RAND_MAX (2.0*(float)RAND_MAX)
83 static int complexity;
86 static int do_tetrahedron;
91 static int random_parms;
93 typedef struct solid solid;
96 float stable_distance;
98 float spherify_strength;
99 float damping_velocity;
100 float damping_factor;
106 GLfloat jiggly_color[4];
107 GLfloat color_dir[3];
111 trackball_state *trackball;
118 GLXContext *glx_context;
121 static jigglystruct *jss = NULL;
123 static XrmOptionDescRec opts[] = {
124 {"-random", ".Jigglypuff.random", XrmoptionNoArg, "true"},
125 {"+random", ".Jigglypuff.random", XrmoptionNoArg, "false"},
126 {"-tetra", ".Jigglypuff.tetra", XrmoptionNoArg, "true"},
127 {"+tetra", ".Jigglypuff.tetra", XrmoptionNoArg, "false"},
128 {"-spooky", ".Jigglypuff.spooky", XrmoptionSepArg, "0"},
129 {"-color", ".Jigglypuff.color", XrmoptionSepArg, DEF_COLOR},
130 {"-shininess", ".Jigglypuff.shininess", XrmoptionSepArg, DEF_SHININESS},
131 {"-complexity", ".Jigglypuff.complexity", XrmoptionSepArg, DEF_COMPLEXITY},
132 {"-speed", ".Jigglypuff.speed", XrmoptionSepArg, DEF_SPEED},
133 {"-spherism", ".Jigglypuff.spherism", XrmoptionSepArg, DEF_SPHERISM},
134 {"-hold", ".Jigglypuff.hold", XrmoptionSepArg, DEF_HOLD},
135 {"-distance", "Jigglypuff.distance", XrmoptionSepArg, DEF_DISTANCE},
136 {"-damping", "Jigglypuff.damping", XrmoptionSepArg, DEF_DAMPING}
139 static argtype vars[] = {
140 {&random_parms, "random", "Random", "True", t_Bool},
141 {&do_tetrahedron, "tetra", "Tetra", "False", t_Bool},
142 {&spooky, "spooky", "Spooky", "0", t_Int},
143 {&color, "color", "Color", DEF_COLOR, t_String},
144 {&shininess, "shininess", "Shininess", DEF_SHININESS, t_Int},
145 {&complexity, "complexity", "Complexity", DEF_COMPLEXITY, t_Int},
146 {&speed, "speed", "Speed", DEF_SPEED, t_Int},
147 {&spherism, "spherism", "Spherism", DEF_SPHERISM, t_Int},
148 {&hold, "hold", "Hold", DEF_HOLD, t_Int},
149 {&distance, "distance", "Distance", DEF_DISTANCE, t_Int},
150 {&damping, "damping", "Damping", DEF_DAMPING, t_Int}
154 #define countof(x) ((int)(sizeof(x)/sizeof(*(x))))
156 ENTRYPOINT ModeSpecOpt jigglypuff_opts = {countof(opts), opts, countof(vars), vars, NULL};
158 #define COLOR_STYLE_NORMAL 0
159 #define COLOR_STYLE_CYCLE 1
160 #define COLOR_STYLE_CLOWNBARF 2
161 #define COLOR_STYLE_FLOWERBOX 3
162 #define COLOR_STYLE_CHROME 4
164 #define CLOWNBARF_NCOLORS 5
166 static const GLfloat clownbarf_colors[CLOWNBARF_NCOLORS][4] = {
167 {0.7, 0.7, 0.0, 1.0},
168 {0.8, 0.1, 0.1, 1.0},
169 {0.1, 0.1, 0.8, 1.0},
170 {0.9, 0.9, 0.9, 1.0},
174 static const GLfloat flowerbox_colors[4][4] = {
175 {0.7, 0.7, 0.0, 1.0},
176 {0.9, 0.0, 0.0, 1.0},
177 {0.0, 0.9, 0.0, 1.0},
178 {0.0, 0.0, 0.9, 1.0},
181 # if 0 /* I am not even going to *try* and make this bullshit compile
182 without warning under gcc -std=c89 -pedantic. -jwz. */
184 # ifdef __GNUC__ /* GCC style */
185 #define _DEBUG(msg, args...) do { \
186 fprintf(stderr, "%s : %d : " msg ,__FILE__,__LINE__ ,##args); \
188 # else /* C99 standard style */
189 #define _DEBUG(msg, ...) do { \
190 fprintf(stderr, "%s : %d : " msg ,__FILE__,__LINE__,__VA_ARGS__); \
194 # ifdef __GNUC__ /* GCC style */
195 #define _DEBUG(msg, args...)
196 # else /* C99 standard style */
197 #define _DEBUG(msg, ...)
202 /* This is all the half-edge b-rep code (as well as basic geometry) */
203 typedef struct face face;
204 typedef struct edge edge;
205 typedef struct hedge hedge;
206 typedef struct vertex vertex;
207 typedef GLfloat coord;
208 typedef coord vector[3];
219 const GLfloat *color;
248 static inline void vector_init(vector v, coord x, coord y, coord z)
255 static inline void vector_copy(vector d, vector s)
262 static inline void vector_add(vector v1, vector v2, vector v)
264 vector_init(v, v1[0]+v2[0], v1[1]+v2[1], v1[2]+v2[2]);
267 static inline void vector_add_to(vector v1, vector v2)
274 static inline void vector_sub(vector v1, vector v2, vector v)
276 vector_init(v, v1[0]-v2[0], v1[1]-v2[1], v1[2]-v2[2]);
279 static inline void vector_scale(vector v, coord s)
286 static inline coord dot(vector v1, vector v2)
288 return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
291 static inline void cross(vector v1, vector v2, vector v)
294 v1[1]*v2[2] - v2[1]*v1[2],
295 v1[2]*v2[0] - v2[2]*v1[0],
296 v1[0]*v2[1] - v2[0]*v1[1]);
299 static inline coord magnitude2(vector v)
301 return v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
304 static inline coord magnitude(vector v)
306 return sqrt(v[0]*v[0] + v[1]*v[1] + v[2]*v[2]);
309 static inline void normalize(vector v)
311 coord mag = 1.0/sqrt(v[0]*v[0]+v[1]*v[1]+v[2]*v[2]);
318 static inline void normalize_to(vector v, coord m)
320 coord mag = 1.0/sqrt(v[0]*v[0]+v[1]*v[1]+v[2]*v[2])/m;
327 static inline void midpoint(vector v1, vector v2, vector v)
330 v1[0] + 0.5 * (v2[0] - v1[0]),
331 v1[1] + 0.5 * (v2[1] - v1[1]),
332 v1[2] + 0.5 * (v2[2] - v1[2]));
335 static inline hedge *partner(hedge *h) {
338 if(h == h->e->left) {
341 else if(h == h->e->right) {
345 /* _DEBUG("Inconsistent edge detected. Presumably, this is a bug. Exiting.\n", NULL); */
350 static vertex *vertex_new(solid *s, vector v)
352 vertex *vtx = (vertex*)malloc(sizeof(vertex));
357 vtx->next = s->vertices;
359 vector_copy(vtx->v, v);
360 vector_init(vtx->f, 0, 0, 0);
361 vector_init(vtx->vel, 0, 0, 0);
365 /* insert a new halfedge after hafter. this is low-level,
366 * i.e. it is a helper for the split_* functions, which
367 * maintain the consistency of the solid.
369 static hedge *hedge_new(hedge *hafter, vertex *vtx)
371 hedge *h = (hedge*)malloc(sizeof(hedge));
374 /* _DEBUG("Out of memory in hedge_new()\n",NULL); */
381 h->next = hafter->next;
387 static edge *edge_new(solid *s)
389 edge *e = (edge*)malloc(sizeof(edge));
391 /* _DEBUG("Out of memory in edge_new()\n",NULL);*/
397 e->left = e->right = NULL;
401 static face *face_new(solid *s, hedge *h)
403 face *f = (face*)malloc(sizeof(face));
405 /* _DEBUG("Out of memory in face_new()",NULL);*/
415 /* split vertex vtx, creating a new edge after v on f
416 * that goes to a new vertex at v, adjoining whatever
417 * face is on the other side of the halfedge attached to
420 * there are at least 2 faces.
421 * partner(h)->next->vtx == vtx
423 * the new halfedge will be inserted AFTER the indicated
424 * halfedge. This means that f->start is guaranteed not to
426 * the vertex returned will have h==<the new halfedge>.
429 static vertex *vertex_split(hedge *h, vector v)
431 hedge *h2, *hn1, *hn2;
440 vtxn = vertex_new(f1->s, v);
441 hn1 = hedge_new(h, vtxn);
443 hn2 = hedge_new(h2, vtxn);
446 if(h2->e->left == h2)
451 en = edge_new(f1->s);
459 static face *face_split(face *f, hedge *h1, hedge *h2)
461 hedge *hn1, *hn2, *tmp;
465 if(h1->f != f || h2->f != f) {
466 /* _DEBUG("Whoah, cap'n, yer usin' a bad halfedge!\n",NULL);*/
470 /* _DEBUG("Trying to split a face at a single vertex\n",NULL);*/
473 /* close the loops */
479 /* insert halfedges & create edge */
480 hn1 = hedge_new(h2->prev, h1->vtx);
481 hn2 = hedge_new(h1->prev, h2->vtx);
488 /* make the new face, first find out which hedge is contained
489 * in the original face, then start the new face at the other */
491 while(tmp != h1 && tmp != h2)
493 tmp = (tmp == h1) ? h2 : h1 ;
494 fn = face_new(f->s, tmp);
498 } while(tmp != fn->start);
499 fn->color = f->color;
503 static solid *solid_new(vector where)
505 solid *s = (solid*)malloc(sizeof(solid));
515 h1 = (hedge*)malloc(sizeof(hedge));
516 h2 = (hedge*)malloc(sizeof(hedge));
517 h1->next = h1->prev = h1;
518 h2->next = h2->prev = h2;
520 vtx = vertex_new(s, where);
531 f1 = face_new(s, h1);
532 f2 = face_new(s, h2);
539 /* This is all the code directly related to constructing the jigglypuff */
540 static void face_tessel2(face *f)
542 hedge *h1=f->start->prev, *h2=f->start->next;
546 while(h2 != h1 && h2->next != h1) {
547 f = face_split(f, h1, h2);
549 h2 = f->start->next->next;
553 /* This will only work with solids composed entirely of
554 * triangular faces. It first add a vertex to the middle
555 * of each edge, then walks the faces, connecting the
557 * I'm abusing the fact that new faces and edges are always
558 * added at the head of the list. If that ever changes,
561 static void solid_tesselate(solid *s)
568 midpoint(e->left->vtx->v, e->right->vtx->v, v);
569 vertex_split(e->left, v);
578 static void solid_spherify(solid * s, coord size)
580 vertex *vtx = s->vertices;
583 normalize_to(vtx->v, size);
588 static solid *tetrahedron(jigglystruct *js)
597 vector_init(v, 1, 1, 1);
599 vector_init(v, -1, -1, 1);
601 vtx = vertex_split(h, v);
602 vector_init(v, -1, 1, -1);
603 vtx = vertex_split(vtx->h, v);
605 f = face_split(s->faces, h, h->prev);
606 vector_init(v, 1, -1, -1);
607 vertex_split(f->start, v);
608 f = s->faces->next->next;
610 face_split(f, h, h->next->next);
612 if(js->color_style == COLOR_STYLE_FLOWERBOX) {
615 f->color = flowerbox_colors[i];
623 static solid *tesselated_tetrahedron(coord size, int iter, jigglystruct *js) {
624 solid *s = tetrahedron(js);
627 for(i=0; i<iter; i++) {
633 static void clownbarf_colorize(solid *s) {
636 f->color = clownbarf_colors[random() % CLOWNBARF_NCOLORS];
641 /* Here be the rendering code */
643 static inline void vertex_calcnormal(vertex *vtx, jigglystruct *js)
645 hedge *start = vtx->h, *h=start;
647 vector_init(vtx->n, 0, 0, 0);
650 vector_sub(h->prev->vtx->v, vtx->v, u);
651 vector_sub(h->next->vtx->v, vtx->v, v);
653 vector_add_to(vtx->n, norm);
654 h = partner(h)->next;
659 vector_scale(vtx->n, js->spooky);
662 static inline void vertex_render(vertex *vtx, jigglystruct *js)
668 /* This can be optimized somewhat due to the fact that all
669 * the faces are triangles. I haven't actually tested to
670 * see what the cost is of calling glBegin/glEnd for each
673 static inline void face_render(face *f, jigglystruct *js)
675 hedge *h1, *h2, *hend;
681 if(js->color_style == COLOR_STYLE_FLOWERBOX ||
682 js->color_style == COLOR_STYLE_CLOWNBARF)
683 glColor4fv(f->color);
684 glBegin(GL_TRIANGLES);
685 while(h1 != hend && h2 !=hend) {
686 vertex_render(h1->vtx, js);
687 vertex_render(h2->vtx, js);
688 vertex_render(hend->vtx, js);
695 static void jigglypuff_render(jigglystruct *js)
697 face *f = js->shape->faces;
698 vertex *vtx = js->shape->vertices;
701 vertex_calcnormal(vtx, js);
710 /* This is the jiggling code */
712 /* stable distance when subdivs == 4 */
713 #define STABLE_DISTANCE 0.088388347648
715 static void update_shape(jigglystruct *js)
717 vertex *vtx = js->shape->vertices;
718 edge *e = js->shape->edges;
721 vector_init(zero, 0, 0, 0);
723 /* sum all the vertex-vertex forces */
727 vector_sub(e->left->vtx->v, e->right->vtx->v, f);
728 mag = js->stable_distance - magnitude(f);
729 vector_scale(f, mag);
730 vector_add_to(e->left->vtx->f, f);
731 vector_sub(zero, f, f);
732 vector_add_to(e->right->vtx->f, f);
736 /* scale back the v-v force and add the spherical force
737 * then add the result to the vertex velocity, damping
738 * if necessary. Finally, move the vertex */
742 vector_scale(vtx->f, js->hold_strength);
743 vector_copy(to_sphere, vtx->v);
744 mag = 1 - magnitude(to_sphere);
745 vector_scale(to_sphere, mag * js->spherify_strength);
746 vector_add_to(vtx->f, to_sphere);
747 vector_add_to(vtx->vel, vtx->f);
748 vector_init(vtx->f, 0, 0, 0);
749 mag = magnitude2(vtx->vel);
750 if(mag > js->damping_velocity)
751 vector_scale(vtx->vel, js->damping_factor);
752 vector_add_to(vtx->v, vtx->vel);
757 /* These are the various initialization routines */
759 static void init_texture(ModeInfo *mi)
761 XImage *img = xpm_to_ximage(mi->dpy, mi->xgwa.visual,
762 mi->xgwa.colormap, jigglymap_xpm);
764 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
765 img->width, img->height, 0, GL_RGBA,
766 GL_UNSIGNED_BYTE, img->data);
771 static void setup_opengl(ModeInfo *mi, jigglystruct *js)
773 const GLfloat lpos0[4] = {-12, 8, 12, 0};
774 const GLfloat lpos1[4] = {7, -5, 0, 0};
775 const GLfloat lcol0[4] = {0.7f, 0.7f, 0.65f, 1};
776 const GLfloat lcol1[4] = {0.3f, 0.2f, 0.1f, 1};
777 const GLfloat scolor[4]= {0.9f, 0.9f, 0.9f, 0.5f};
779 glDrawBuffer(GL_BACK);
780 glClearColor(0, 0, 0, 0);
781 glShadeModel(GL_SMOOTH);
782 glEnable(GL_DEPTH_TEST);
784 if(js->do_wireframe) {
785 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
790 glEnable(GL_CULL_FACE);
793 if(js->color_style != COLOR_STYLE_CHROME) {
794 glEnable(GL_LIGHTING);
798 glLightfv(GL_LIGHT0, GL_POSITION, lpos0);
799 glLightfv(GL_LIGHT1, GL_POSITION, lpos1);
800 glLightfv(GL_LIGHT0, GL_DIFFUSE, lcol0);
801 glLightfv(GL_LIGHT1, GL_DIFFUSE, lcol1);
803 glEnable(GL_COLOR_MATERIAL);
804 glColor4fv(js->jiggly_color);
806 glMaterialfv(GL_FRONT, GL_SPECULAR, scolor);
807 glMateriali(GL_FRONT, GL_SHININESS, js->shininess);
811 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
812 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
813 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
814 glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
815 glEnable(GL_TEXTURE_GEN_S);
816 glEnable(GL_TEXTURE_GEN_T);
817 glEnable(GL_TEXTURE_2D);
818 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
819 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
820 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
824 static int parse_color(jigglystruct *js)
826 unsigned int r, g, b;
827 if(!strcmp(color, "clownbarf")) {
828 js->color_style = COLOR_STYLE_CLOWNBARF;
831 else if(!strcmp(color, "flowerbox")) {
832 js->color_style = COLOR_STYLE_FLOWERBOX;
835 else if(!strcmp(color, "chrome")) {
836 js->color_style = COLOR_STYLE_CHROME;
839 else if(!strcmp(color, "cycle")) {
840 js->color_style = COLOR_STYLE_CYCLE;
841 js->jiggly_color[0] = ((float)random()) / REAL_RAND_MAX * 0.7 + 0.3;
842 js->jiggly_color[1] = ((float)random()) / REAL_RAND_MAX * 0.7 + 0.3;
843 js->jiggly_color[2] = ((float)random()) / REAL_RAND_MAX * 0.7 + 0.3;
844 js->jiggly_color[3] = 1.0f;
845 js->color_dir[0] = ((float)random()) / REAL_RAND_MAX / 100.0;
846 js->color_dir[1] = ((float)random()) / REAL_RAND_MAX / 100.0;
847 js->color_dir[2] = ((float)random()) / REAL_RAND_MAX / 100.0;
852 if(strlen(color) != 7)
854 if(sscanf(color,"#%02x%02x%02x", &r, &g, &b) != 3) {
857 js->jiggly_color[0] = ((float)r)/255;
858 js->jiggly_color[1] = ((float)g)/255;
859 js->jiggly_color[2] = ((float)b)/255;
860 js->jiggly_color[3] = 1.0f;
865 static void randomize_parameters(jigglystruct *js) {
866 do_tetrahedron = random() & 1;
867 js->do_wireframe = !(random() & 3);
868 js->color_style = random() % 5;
869 if(js->color_style == COLOR_STYLE_NORMAL
870 || js->color_style == COLOR_STYLE_CYCLE) {
871 js->jiggly_color[0] = ((float)random()) / REAL_RAND_MAX * 0.5 + 0.5;
872 js->jiggly_color[1] = ((float)random()) / REAL_RAND_MAX * 0.5 + 0.5;
873 js->jiggly_color[2] = ((float)random()) / REAL_RAND_MAX * 0.5 + 0.5;
874 js->jiggly_color[3] = 1.0f;
875 if(js->color_style == COLOR_STYLE_CYCLE) {
876 js->color_dir[0] = ((float)random()) / REAL_RAND_MAX / 100.0;
877 js->color_dir[1] = ((float)random()) / REAL_RAND_MAX / 100.0;
878 js->color_dir[2] = ((float)random()) / REAL_RAND_MAX / 100.0;
881 if((js->color_style != COLOR_STYLE_CHROME) && (random() & 1))
882 js->spooky = (random() % 6) + 4;
885 js->shininess = random() % 200;
886 speed = (random() % 700) + 50;
887 /* It' kind of dull if this is too high when it starts as a sphere */
888 spherism = do_tetrahedron ? (random() % 500) + 20 : (random() % 100) + 10;
889 hold = (random() % 800) + 100;
890 distance = (random() % 500) + 100;
891 damping = (random() % 800) + 50;
894 static void calculate_parameters(jigglystruct *js, int subdivs) {
895 /* try to compensate for the inherent instability at
897 float dist_factor = (subdivs == 6) ? 2 : (subdivs == 5) ? 1 : 0.5;
899 js->stable_distance = ((float)distance / 500.0)
900 * (STABLE_DISTANCE / dist_factor);
901 js->hold_strength = (float)hold / 10000.0;
902 js->spherify_strength = (float)spherism / 10000.0;
903 js->damping_velocity = (float)damping / 100000.0;
905 0.001/max(js->hold_strength, js->spherify_strength);
907 js->speed = (float)speed / 1000.0;
910 /* The screenhack related functions begin here */
912 ENTRYPOINT Bool jigglypuff_handle_event(ModeInfo *mi, XEvent *event)
914 jigglystruct *js = &jss[MI_SCREEN(mi)];
916 if(event->xany.type == ButtonPress &&
917 event->xbutton.button == Button1) {
919 gltrackball_start(js->trackball, event->xbutton.x, event->xbutton.y,
920 MI_WIDTH(mi), MI_HEIGHT(mi));
923 else if(event->xany.type == ButtonRelease &&
924 event->xbutton.button == Button1) {
928 else if (event->xany.type == ButtonPress &&
929 (event->xbutton.button == Button4 ||
930 event->xbutton.button == Button5 ||
931 event->xbutton.button == Button6 ||
932 event->xbutton.button == Button7))
934 gltrackball_mousewheel (js->trackball, event->xbutton.button, 10,
935 !!event->xbutton.state);
938 else if(event->xany.type == MotionNotify && js->button_down) {
939 gltrackball_track(js->trackball, event->xmotion.x, event->xmotion.y,
940 MI_WIDTH(mi), MI_HEIGHT(mi));
946 ENTRYPOINT void reshape_jigglypuff(ModeInfo *mi, int width, int height)
948 GLfloat aspect = (GLfloat)width / (GLfloat)height;
950 glViewport(0, 0, width, height);
951 glMatrixMode(GL_PROJECTION);
953 glFrustum(-0.5*aspect, 0.5*aspect, -0.5, 0.5, 1, 20);
954 /* glTranslatef(0, 0, -10);*/
957 ENTRYPOINT void draw_jigglypuff(ModeInfo *mi)
959 jigglystruct *js = &jss[MI_SCREEN(mi)];
961 glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(js->glx_context));
963 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
965 glMatrixMode(GL_MODELVIEW);
967 glTranslatef(0,0,-10);
969 glRotatef(js->angle, sin(js->axis), cos(js->axis), -sin(js->axis));
970 glTranslatef(0, 0, 5);
971 if(!(js->button_down)) {
972 if((js->angle += js->speed) >= 360.0f ) {
975 if((js->axis+=0.01f) >= 2*M_PI ) {
979 gltrackball_rotate(js->trackball);
981 if(js->color_style == COLOR_STYLE_CYCLE) {
983 vector_add(js->jiggly_color, js->color_dir, js->jiggly_color);
986 if(js->jiggly_color[i] > 1.0 || js->jiggly_color[i] < 0.3) {
987 js->color_dir[i] = (-js->color_dir[i]);
988 js->jiggly_color[i] += js->color_dir[i];
991 glColor4fv(js->jiggly_color);
994 jigglypuff_render(js);
999 glXSwapBuffers(MI_DISPLAY(mi), MI_WINDOW(mi));
1002 ENTRYPOINT void init_jigglypuff(ModeInfo *mi)
1008 jss = (jigglystruct*)
1009 calloc(MI_NUM_SCREENS(mi), sizeof(jigglystruct));
1011 fprintf(stderr, "%s: No..memory...must...abort..\n", progname);
1016 js = &jss[MI_SCREEN(mi)];
1018 js->do_wireframe = MI_IS_WIREFRAME(mi);
1020 js->shininess = shininess;
1022 subdivs = (complexity==1) ? 4 : (complexity==2) ? 5
1023 : (complexity==3) ? 6 : 5;
1025 js->spooky = spooky << (subdivs-3);
1027 if(!parse_color(js)) {
1028 fprintf(stderr, "%s: Bad color specification: '%s'.\n", progname, color);
1033 randomize_parameters(js);
1035 js->angle = frand(180);
1036 js->axis = frand(M_PI);
1038 js->shape = tesselated_tetrahedron(1, subdivs, js);
1041 solid_spherify(js->shape, 1);
1043 if(js->color_style == COLOR_STYLE_CLOWNBARF)
1044 clownbarf_colorize(js->shape);
1046 calculate_parameters(js, subdivs);
1048 if((js->glx_context = init_GL(mi)) != NULL) {
1049 glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(js->glx_context));
1050 setup_opengl(mi, js);
1051 reshape_jigglypuff(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
1056 js->trackball = gltrackball_init();
1057 /* _DEBUG("distance : %f\nhold : %f\nspherify : %f\ndamping : %f\ndfact : %f\n",
1058 js->stable_distance, js->hold_strength, js->spherify_strength,
1059 js->damping_velocity, js->damping_factor);
1060 _DEBUG("wire : %d\nspooky : %d\nstyle : %d\nshininess : %d\n",
1061 js->do_wireframe, js->spooky, js->color_style, js->shininess);*/
1064 XSCREENSAVER_MODULE ("Jigglypuff", jigglypuff)
1068 /* This is the end of the file */